Fatal error using intent inside a ListView

Question

I'm trying to open an activity depending on which item in ListView I chose.

Add click to my ListView :

private void addClickList() {
        myList.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                Intent intent = new Intent(FirstActi.this, SecondActi.class);
                startActivity(intent);
            }

        });
}

This is my android manifest for these two activities :

        <activity
            android:name=".FirstActi"
            android:label="@string/firstActi">
            <intent-filter>
                <action android:name="com.example.applicationname.FirstActi" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter> 
        </activity>

        <activity
            android:name=".SecondActi"
            android:label="@string/secondActi" >
        </activity>

This is the output from the logcat :

05-20 17:28:58.251: E/AndroidRuntime(27073): FATAL EXCEPTION: main
05-20 17:28:58.251: E/AndroidRuntime(27073): Process: com.example.applicationname, PID: 27073
05-20 17:28:58.251: E/AndroidRuntime(27073): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.applicationname/com.example.applicationname.FirstActi}: java.lang.InstantiationException: can't instantiate class com.example.arduinodivecompanion.SecondActi; no empty constructor
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.app.ActivityThread.access$800(ActivityThread.java:135)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.os.Handler.dispatchMessage(Handler.java:102)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.os.Looper.loop(Looper.java:136)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.app.ActivityThread.main(ActivityThread.java:5017)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at java.lang.reflect.Method.invokeNative(Native Method)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at java.lang.reflect.Method.invoke(Method.java:515)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at dalvik.system.NativeStart.main(Native Method)
05-20 17:28:58.251: E/AndroidRuntime(27073): Caused by: java.lang.InstantiationException: can't instantiate class com.example.applicationname.SecondActi; no empty constructor
05-20 17:28:58.251: E/AndroidRuntime(27073):    at java.lang.Class.newInstanceImpl(Native Method)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at java.lang.Class.newInstance(Class.java:1208)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
05-20 17:28:58.251: E/AndroidRuntime(27073):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112)
05-20 17:28:58.251: E/AndroidRuntime(27073):    ... 11 more

I think that maybe it's a problem with the intent filter

Looks like you have created constructor in your `Activity`, You should not create constructor in the `Activity` classes. Use the Lifecycle callbacks.. — Praful Bhatnagar, May 20 '14 at 15:38
http://stackoverflow.com/questions/18939249/android-intentservice-cant-instantiate-class-no-empty-constructor — zgc7009, May 20 '14 at 15:38

score 1 · Accepted Answer · answered May 20 '14 at 15:41

1

As per android guidelines you should not create constructor in the Activity classes since android OS creates object of Activity classes and it use the default empty constructor of the class to create object. You should not be creating object of Activity directly.

Looks like you have created constructor in your Activity. Remove the constructor from your Activities and use the Lifecycle callbacks.

answered May 20 '14 at 15:41

Praful Bhatnagar

7,425
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Oh yes, that was that, the simple mistakes are sometimes the most difficult to find. Thanks ! – tomatediabolik May 20 '14 at 15:51

score 0 · Answer 2 · edited May 20 '14 at 15:42

0

Nothing to do with intent filters. Read the nested exception:

Caused by: java.lang.InstantiationException: can't instantiate class com.example.applicationname.SecondActi; no empty constructor

Create the constructor it's looking for

edited May 20 '14 at 15:42

Praful Bhatnagar

7,425
2
36
44

answered May 20 '14 at 15:38

Gabe Sechan

90,003
9
87
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Yeah but the problem is that I already tried to add an empty constructor to `SecondActi` like this : `public SecondActi(){ super(); }` but then it only switch to an activity with nothing on it – tomatediabolik May 20 '14 at 15:46

Fatal error using intent inside a ListView

2 Answers2